/* ============================================================
   app.css — PHP Score Lookup Website
   ============================================================ */
:root {
  --bg:     #080c12; --bg2: #0e1420; --bg3: #161d2e; --bg4: #1e2740;
  --border: #2a3548; --text: #e2e8f0; --muted: #7c8fa6; --dim: #4a5568;
  --sky:    #38bdf8; --gold: #f59e0b; --green: #34d399;
  --red:    #f87171; --purple: #a78bfa;
  --r: 10px; --r-sm: 6px;
  --sh: 0 4px 20px rgba(0,0,0,.5);
  --tr: .18s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;font-size:14px}
a{color:inherit;text-decoration:none}
.container{max-width:1400px;margin:0 auto;padding:0 20px}

/* ── NAVBAR ── */
.nav{background:rgba(8,12,18,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:200;padding:0 20px}
.nav-inner{display:flex;align-items:center;gap:24px;height:52px;max-width:1400px;margin:0 auto}
.nav-brand{font-weight:800;font-size:15px;background:linear-gradient(135deg,var(--sky),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;white-space:nowrap}
.nav-links{display:flex;gap:4px;flex:1}
.nav-link{padding:6px 12px;border-radius:var(--r-sm);color:var(--muted);font-weight:500;font-size:13px;transition:all var(--tr)}
.nav-link:hover,.nav-link.active{background:rgba(56,189,248,.1);color:var(--sky)}
.nav-search{margin-left:auto}
.nav-search input{background:var(--bg3);border:1px solid var(--border);border-radius:100px;color:var(--text);font-family:inherit;font-size:13px;padding:6px 14px;outline:none;width:200px;transition:all var(--tr)}
.nav-search input:focus{border-color:var(--sky);width:260px}

/* ── HERO ── */
.hero{position:relative;overflow:hidden;padding:64px 0 52px;text-align:center}
.hero::before{content:'';position:absolute;inset:0;background:
  radial-gradient(ellipse at 20% 50%,rgba(56,189,248,.12) 0,transparent 60%),
  radial-gradient(ellipse at 80% 50%,rgba(167,139,250,.1) 0,transparent 60%)}
.hero-inner{position:relative;z-index:1}
.hero-badge{display:inline-block;background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.25);color:var(--sky);font-size:11px;font-weight:700;padding:4px 14px;border-radius:100px;letter-spacing:.5px;margin-bottom:16px}
.hero-title{font-size:clamp(28px,5vw,52px);font-weight:900;line-height:1.15;margin-bottom:10px}
.grad{background:linear-gradient(135deg,var(--sky),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{color:var(--muted);font-size:14px;margin-bottom:36px}

/* Search box */
.search-wrap{max-width:640px;margin:0 auto 24px}
.sbox{display:flex;align-items:center;background:var(--bg3);border:2px solid var(--border);border-radius:100px;padding:8px 8px 8px 20px;gap:10px;transition:all var(--tr)}
.sbox:focus-within{border-color:var(--sky);box-shadow:0 0 0 4px rgba(56,189,248,.12)}
.sbox-icon{font-size:16px;opacity:.5}
.sbox input{flex:1;background:none;border:none;outline:none;font-family:inherit;font-size:16px;font-weight:500;color:var(--text)}
.sbox input::placeholder{color:var(--dim)}
.sbox-btn{background:var(--sky);border:none;border-radius:100px;color:#080c12;font-family:inherit;font-size:13px;font-weight:700;padding:8px 20px;cursor:pointer;transition:opacity var(--tr)}
.sbox-btn:hover{opacity:.85}

/* ── STATS PILLS ── */
.stats-row{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.spill{background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:100px;padding:8px 18px;display:flex;align-items:center;gap:10px}
.spill-n{font-size:20px;font-weight:800;background:linear-gradient(135deg,var(--sky),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.spill-l{font-size:11px;color:var(--muted);font-weight:500}

/* Quick chips */
.quick-chips{display:flex;justify-content:center;gap:6px;flex-wrap:wrap;margin-top:16px}
.qchip{border:1px solid var(--border);background:var(--bg3);color:var(--muted);border-radius:100px;padding:4px 14px;font-size:12px;font-weight:600;cursor:pointer;transition:all var(--tr)}
.qchip:hover{border-color:var(--sky);color:var(--sky)}

/* ── FILTER BAR ── */
.fbar{background:var(--bg2);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:12px 20px}
.fbar-inner{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;max-width:1400px;margin:0 auto}
.fg{display:flex;flex-direction:column;gap:4px;min-width:130px}
.fg.wide{flex:1;min-width:200px}
.fg label{font-size:10px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.fg select,.fg input{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text);font-family:inherit;font-size:13px;padding:7px 10px;outline:none;transition:border-color var(--tr)}
.fg select:focus,.fg input:focus{border-color:var(--sky)}
.fg select option{background:var(--bg3)}
.fg input.sm{max-width:75px}
.rrow{display:flex;align-items:center;gap:6px}
.sep{color:var(--dim)}
.btn-reset{background:none;border:1px solid var(--border);border-radius:var(--r-sm);color:var(--muted);font-family:inherit;font-size:12px;font-weight:700;padding:7px 12px;cursor:pointer;transition:all var(--tr);align-self:flex-end}
.btn-reset:hover{border-color:var(--red);color:var(--red)}
.btn-csv{background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.25);border-radius:var(--r-sm);color:var(--green);font-family:inherit;font-size:12px;font-weight:700;padding:7px 12px;cursor:pointer;transition:all var(--tr);align-self:flex-end}
.btn-csv:hover{background:rgba(52,211,153,.2)}

/* ── RESULTS BAR ── */
.rbar{display:flex;justify-content:space-between;align-items:center;padding:12px 0 10px;font-size:13px;color:var(--muted)}
.rbar strong{color:var(--text)}

/* ── TABLE ── */
.tcard{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
table.dt{width:100%;border-collapse:collapse;font-size:13px}
table.dt thead tr{background:var(--bg3)}
table.dt th{padding:10px 13px;text-align:left;font-size:10.5px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;white-space:nowrap;border-bottom:1px solid var(--border)}
table.dt th.srt{cursor:pointer;position:relative;padding-right:18px;transition:color var(--tr),background var(--tr)}
table.dt th.srt:hover{color:var(--sky);background:rgba(56,189,248,.05)}
table.dt th.srt::after{content:'⇅';position:absolute;right:4px;top:50%;transform:translateY(-50%);opacity:.3;font-size:9px}
table.dt th.srt-a::after{content:'▲';opacity:1;color:var(--sky)}
table.dt th.srt-d::after{content:'▼';opacity:1;color:var(--sky)}
table.dt th.srt-active{color:var(--sky)!important;background:rgba(56,189,248,.06)}
table.dt th.gold-h{color:var(--gold)!important}
table.dt th.sky-h{color:var(--sky)!important}
table.dt td{padding:9px 13px;border-bottom:1px solid rgba(42,53,72,.4);white-space:nowrap;vertical-align:middle}
table.dt tbody tr:hover td{background:rgba(56,189,248,.035)}
table.dt tbody tr:last-child td{border-bottom:none}
.tc{text-align:center}
.tw{font-weight:700}

/* Score coloring */
.hi{color:#34d399;font-weight:600}
.lo{color:#f87171}
.mid{color:var(--text)}
.dim{color:var(--dim)}
.utk{color:var(--gold);font-weight:700}
.tot-sky{color:var(--sky);font-size:14px;font-weight:700}
.tot-gold{color:var(--gold);font-size:14px;font-weight:700}

/* Rank */
.rnk{text-align:center;color:var(--dim);font-weight:600}
.r1{color:gold!important;font-size:17px}
.r2{color:silver!important;font-size:16px}
.r3{color:#cd7f32!important;font-size:15px}

/* Mon badge */
.mbadge{display:inline-block;padding:2px 9px;border-radius:100px;font-size:11px;font-weight:600;border:1px solid transparent}

/* School link */
.sc-link{color:var(--muted);font-size:12px;max-width:180px;overflow:hidden;text-overflow:ellipsis;display:inline-block;transition:color var(--tr)}
.sc-link:hover{color:var(--sky)}

/* ── PAGINATION ── */
.pg{display:flex;justify-content:center;align-items:center;gap:4px;padding:16px;flex-wrap:wrap;border-top:1px solid var(--border)}
.pgbtn{display:inline-flex;align-items:center;justify-content:center;min-width:32px;height:32px;padding:0 6px;border-radius:var(--r-sm);background:var(--bg3);border:1px solid var(--border);color:var(--muted);font-size:12px;font-weight:600;cursor:pointer;transition:all var(--tr)}
.pgbtn:hover,.pgbtn:focus{border-color:var(--sky);color:var(--sky)}
.pgbtn.active{background:var(--sky);border-color:var(--sky);color:#080c12}
.pg-info{font-size:12px;color:var(--muted);padding:0 6px}
.pg-ellipsis{color:var(--dim);padding:0 4px}

/* ── CARDS (school list) ── */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.scard{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);padding:16px;transition:transform var(--tr),box-shadow var(--tr)}
.scard:hover{transform:translateY(-2px);box-shadow:var(--sh)}
.scard-name{font-weight:700;font-size:14px;margin-bottom:6px}
.scard-meta{font-size:12px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.scard-stats{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.sstat{background:var(--bg3);border-radius:var(--r-sm);padding:6px 10px}
.sstat-v{font-size:15px;font-weight:700}
.sstat-l{font-size:10px;color:var(--muted)}

/* ── CHART CARDS ── */
.chart-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:20px}
@media(max-width:900px){.chart-grid{grid-template-columns:1fr}}
.ccard{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);padding:20px;box-shadow:var(--sh)}
.ccard-title{font-size:13px;font-weight:700;margin-bottom:14px;color:var(--text)}

/* ── MISC ── */
.section{padding:20px 0}
.section-title{font-size:16px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.tag{display:inline-block;padding:3px 10px;border-radius:100px;font-size:11px;font-weight:700;margin-left:8px}
.tag-chuyen{background:rgba(56,189,248,.12);color:var(--sky);border:1px solid rgba(56,189,248,.25)}
.tag-thpt{background:rgba(52,211,153,.12);color:var(--green);border:1px solid rgba(52,211,153,.25)}
.info-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;margin-bottom:16px}
.istat{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r);padding:14px 16px}
.istat-n{font-size:24px;font-weight:800;background:linear-gradient(135deg,var(--sky),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.istat-l{font-size:11px;color:var(--muted);font-weight:500;margin-top:2px}
.spinner{display:inline-block;width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--sky);border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}
.empty{text-align:center;padding:50px;color:var(--muted)}
.footer{text-align:center;padding:20px;color:var(--dim);font-size:12px;border-top:1px solid var(--border);margin-top:24px}
@media(max-width:768px){
  .hero{padding:40px 0 32px}
  .fbar-inner{flex-direction:column}
  .fg{min-width:100%}
  .chart-grid{grid-template-columns:1fr}
  table.dt th,.nav-link span{display:none}
  table.dt th:nth-child(-n+4),table.dt td:nth-child(-n+4){display:table-cell}
}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.tcard,.ccard,.scard{animation:fadeUp .3s ease}